I don't have the HV-20, but I would start with the manual. If that doesn't answer your questions, someone may be able to respond to specific questions.
I just bought HV20 and I have Windows XP with 80 GB Hard Drive and 2 GB RAM with Pinnacle Studio 11 as video editing software. I have used to have Canon ZR80,ZR100 and ZR500. I did video editing in the past. My question is, I want to shoot my home (all) videos into HDV format using HV20 and burn DVDs(Standard DV) out of my miniDV. Since, I dont have hardware to burn Blue-Ray or play Blue-Ray Disk Player, I want to burn standard DVD. Please let me know what all the options do I need to set in my camera to shoot in HDV and download in SDV. Thank you.